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Hipersockets Usage by Z/OS HiperSockets Usage by z/OS Session 17294 Tuesday 8/11 Europe 1 at 1:45pm Linda Harrison [email protected] Insert Custom Session QR if Desired Trademarks The following are trademarks of the International Business Machines Corporation in the United States and/or other countries. AIX* IBM i* POWER7* PureSystems Tivoli* BladeCenter* IBM logo* Power Systems Storwize* WebSphere* DB2* Informix* PowerVM System Storage* zEnterprise* Easy TIER* PartnerWorld * PureApplication System x* IBM* Power* PureFlex System z* * Registered trademarks of IBM Corporation The following are trademarks or registered trademarks of other companies. Adobe, the Adobe logo, PostScript, and the PostScript logo are e ither registered trademarks or trademarks of Adobe Systems Incorporated in the United States, and/or other countries. IT Infrastructure Library is a registered trademark of the Central Computer and Telecommunications Agency which is now part of the Office of Government Commerce. Intel, Intel logo, Intel Inside, Intel Inside logo, Intel Centrino, Intel Centrino logo, Celeron, Intel Xeon, Intel SpeedStep, Itanium, and Pentium are trademarks or registered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. Linux is a registered trademark of Linus Torvalds in the United States, other countries, or both. Microsoft, Windows, Windows NT, and the Windows logo are trademarks of Microsoft Corporation in the United States, other countries, or both. Windows Server and the Windows logo are trademarks of the Microsoft group of countries. ITIL is a registered trademark, and a registered community trademark of the Office of Government Commerce, and is registered in the U.S. Patent and Trademark Office. UNIX is a registered trademark of The Open Group in the United States and other countries. Java and all Java based trademarks and logos are trademarks or registered trademarks of Oracle and/or its affiliates. Cell Broadband Engine is a trademark of Sony Computer Entertainment, Inc. in the United States, other countries, or both and is used under license therefrom. Linear Tape-Open, LTO, the LTO Logo, Ultrium, and the Ultrium logo are trademarks of HP, IBM Corp. and Quantum in the U.S. and other countries. * Other product and service names might be trademarks of IBM or other companies. Notes : Performance is in Internal Throughput Rate (ITR) ratio based on measurements and projections using standard IBM benchmarks in a controlled environment. The actual throughput that any user will experience will vary depending upon considerations such as the a mount of multiprogramming in the user's job stream, the I/O configuration, the storage configuration, and the workload processed. Therefore, no assurance can be given that an individual user will achieve throughput improvements equivalent to the performance ratios stated here. IBM hardware products are manufactured from new parts, or new and serviceable used parts. Regardless, our warranty terms apply. All customer examples cited or described in this presentation ar e presented as illustrations of the manner in which some custom ers have used IBM products and the results they may have achieve d. Actual environmental costs and performance characteristics will vary de pending on individual customer configurations and conditions. This publication was produced in the United States. IBM may not offer the products, services or features discussed in this docu ment in other countries, and the information may be subject to change without notice. Consult your local IBM business contact for information on the product or services available in your area. All statements regarding IBM's future direction and intent are subject to change or withdrawal without notice, and represent goals and objectives only. Information about non-IBM products is obtained from the manufacturers of those products or their published announcements. IBM has not tested those products and cannot confirm the performance, compatibility, or any other claims related to non -IBM products. Questions on the capabilities of non -IBM products should be addressed to the suppliers of those products. Prices subject to change without notice. Contact your IBM representative or Business Partner for the most current pricing in your geography. Abstract HiperSockets are virtual LANs provided by the z Systems platform without any additional fee. Because they are internal and virtual LANs on the z System there is no exposed cable or wire and therefore provide a secure connection between LPARs in the same z Systems machine. This session will detail what z Systems HiperSockets are and how they can be used between LPARs. HiperSockets implementation on z/OS will be explained. Some Linux on System z implementations are resistant to use dynamic routing. Without dynamic routing HiperSockets and OSA connections between z/OS and Linux on System z will need static routing definitions. HiperSockets routing options between z/OS and Linux on System z will be discussed. This document details the HiperSockets in z/OS running standalone on a System z processor LPAR. For the additional tasks required for configuring HiperSockets in z/OS running as a guest under z/VM, or HiperSockets in z/OS running as a guest under z/VM using Guest LAN(s) support, or for the tasks required for HiperSockets in z/Linux or in z/VM, please consult the “HiperSockets Implementation Guide” Redbook, SG24-6816 Complete your session evaluations online at www.SHARE.org/Orlando-Eval 8/11/2015 3 Agenda • HiperSockets Overview • OSA vs. HiperSockets vs. RoCE • Routing Basics • Sending and Receiving Data • ARP and IP Routing • HiperSockets Between z/OS and Linux • More Information • Appendicies – More Configuration Details and Commands – DynamicXCF Details Complete your session evaluations online at www.SHARE.org/Orlando-Eval 8/11/2015 Page 4 HiperSockets Overview Redbook Redbook Redbook Communications IP IP HiperSockets IBM System z Server for z/OS Configuration Configuration Implementation Connectivity TCP/IP Guide Reference Guide Handbook Implementation SC27-3650 SC27-3651 SG24-6816 SG24-5444 Volume 1: Base Functions, Connectivity, and Routing SG24-8096 Complete your session evaluations online at www.SHARE.org/Orlando-Eval 8/11/2015 5 HiperSockets (iQDIO) Unix Unix Server Server HiperSockets System z may be used Linux Linux z/OS Unix Unix Linux Linux Linux Linux Server Server for server z/OS consolidation Unix Unix Server System z Server Unix Unix Server Server HiperSockets LAN • HiperSockets = Internal Queued Direct Input Output (iQDIO) – Was developed from the OSA QDIO architecture • Is limited to TCP/IP protocol only to/from z/OS (z/VM and Linux on System z support Layer 2) – Also known as HiperSockets device or System z internal virtual LAN or HiperSockets LAN – LPAR to LPAR communication via shared memory • High speed, low latency, similar to cross-address-space memory move using memory bus • Provides better performance than channel protocols for network access. – Multiple HiperSockets may be configured as internal LANs on the System z box. – A HiperSockets LAN may be configured to be part of TCP/IP DynamicXCF. • A TCP/IP stack may only define a single HiperSockets LAN for DynamicXCF. – Some TCP/IP stacks may use one HiperSockets LAN for DynamicXCF connectivity while other TCP/IP stacks use a different HiperSockets LAN for DynamicXCF connectivity. • Not recommended for some LPARs to define a HiperSockets LAN for DynamicXCF and other LPARs to manually define the same HiperSockets LAN. – Common Lookup Table is stored in the Hardware System Area, the same as QDIO. • HiperSockets LAN, IP address, TCP/IP stack Complete your session evaluations online at www.SHARE.org/Orlando-Eval 8/11/2015 6 TCP/IP LPAR to LPAR Communication Path Capacity and Speed Increases System z System z System z z/OS Linux z/OS z/OS Linux z/OS Linux z/OS RoCE RoCE OSA Fison Escon OSA OSA HiperSockets LAN When using a shared OSA, IP HiperSockets may be faster traffic between LPARs may than OSA QDIO. RoCE is now available but When using non-shared OSA, IP traffic between LPARs travel across the OSA without there is a cost. travels out onto the LAN and back into the System z. going out onto the LAN. When using Ficon, IP traffic travels outside the System z. • The System z does a direct move from one LPAR’s memory to another LPAR’s memory. • HiperSockets is usually the fastest connection possible between LPARs – Now RoCE offers an additional option but has a cost associated with it. • HiperSockets Maximums – 32 HiperSockets LANs on zEnterprise z196 and later – 16 HiperSockets LANs on System z9 and z10 – 32 HiperSockets LANs on z196 and later – Current limits are documented in Redbook “IBM System z Connectivity Handbook”, SG24-5444 • HiperSockets CHPIDs may span across multiple Logical Channel SubSystems (LCSS) Complete your session evaluations online at www.SHARE.org/Orlando-Eval 8/11/2015 7 TCP/IP DynamicXCF Transport Choices XCF Connectivity System z System z HiperSockets LPAR IUTSAMEH LPAR LPAR z/OS z/OS z/OS TCP/IP TCP/IP TCP/IP TCP/IP • TCP/IP DynamicXCF is capable of dynamically creating multiple device, link, and interfaces all with the same IPv4 or IPv6 address: – Same host: device IUSAMEH, link EZASAMEMVS (IPv4), interface EZ6SAMEMVS (IPv6) – Hipersockets: device IUTIQDIO, link IQDLNK nnnnnnnn (IPv4), interface IQDIOINTF6 (IPv6) • where nnnnnnnn is the hexadecimal representation of the IP address specified on the IPCONFIG DYNAMICXCF statement – XCF connectivity: device CPName, link EZAXCF nn (IPv4), interface EZ6XCF nn (IPv6) • where nn is the 2-character &SYSCLONE value • TCP/IP DynamicXCF automatically chooses the fastest path: – Same host is used between TCP/IP stacks inside the same LPAR – HiperSockets is used between TCP/IP stacks inside same System z CEC (when configured) – XCF connectivity is used between TCP/IP stacks outside the CEC • VTAM start-options required for TCP/IP DynamicXCF use of HiperSockets: – IQDCHPID=nn (where nn is the HiperSockets LAN CHPID, ie. FA) – XCFINIT=YES (required for TCP/IP DynamicXCF with or without HiperSockets) • Generates XCF device ISTLSXCF in VTAM • Requires prerequisite Start Options like HPR=RTP, which requires minimal APPN enablement.
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